I have several Lee collet dies but the one for my .308 has me stymied. I am using Lapua brass, all parts look normal and are lubricated. The collet moves up and down freely on the press with no case inserted. The mandrel mics at .303. Presently, it is adjusted per Lee instructions.
If I put a fired case in it, it will not size the neck. It's like it's against a hard stop. What's wrong with this picture?
If I put a fired case in it, it will not size the neck. It's like it's against a hard stop. What's wrong with this picture?